feat(jobs): add dedicated workspace page

Make /jobs/:id the canonical application workspace while preserving list state and compatibility links. Replace popup and expandable-row navigation with accessible whole-row routing and richer job details.

JobTrackerApi/Services/ApplicationWorkspaceService.cs

@@ -28,6 +28,14 @@ public sealed record WorkspaceOverviewDto(
     DateTime? FollowUpAt,
     string? NextAction,
     string? JobUrl,
+    DateTime SavedAt,
+    string? Description,
+    string? TranslatedDescription,
+    string? DescriptionLanguage,
+    IReadOnlyList<string> Tags,
+    string? Notes,
+    string? Source,
+    string? CountryCode,
     bool HasJobDescription,
     WorkspaceCvDto Cv,
     bool HasCoverLetter,
@@ -59,7 +67,9 @@ public sealed class ApplicationWorkspaceService : IApplicationWorkspaceService
 
     public async Task<WorkspaceOverviewDto?> GetOverviewAsync(string ownerUserId, int jobApplicationId, CancellationToken ct)
     {
-        var job = await _db.JobApplications.AsNoTracking().Include(j => j.Company)
+        var job = await _db.JobApplications.AsNoTracking()
+            .Include(j => j.Company)
+            .Include(j => j.Job)
             .FirstOrDefaultAsync(j => j.Id == jobApplicationId && j.OwnerUserId == ownerUserId, ct);
         if (job is null) return null;
 
@@ -116,7 +126,15 @@ public sealed class ApplicationWorkspaceService : IApplicationWorkspaceService
             job.FollowUpAt,
             job.NextAction,
             job.JobUrl,
-            !string.IsNullOrWhiteSpace(job.Description),
+            job.SavedAt,
+            job.Description,
+            job.TranslatedDescription,
+            job.DescriptionLanguage,
+            JobApplicationHelpers.SplitTags(job.Tags).Distinct(StringComparer.OrdinalIgnoreCase).ToList(),
+            job.Notes,
+            job.Job?.Source,
+            job.Job?.CountryCode,
+            !string.IsNullOrWhiteSpace(job.Description) || !string.IsNullOrWhiteSpace(job.TranslatedDescription),
             cv,
             hasCoverLetter,
             documentCount,